Seeing eye to eye: An evaluation of the use of video-conferencing to support collaboration

Student mobility and trans-national collaborative modes of learning at University level have been strongly promoted within Europe. However, such initiatives are expensive, difficult to organise and do not always attain their objectives. Recently there has been considerable interest in the extent to which computer-mediated communication between students in different countries can either supplement or substitute for actual student mobility. This paper reports an evaluation of a project in which video-conferencing was introduced in the context of an established Anglo-Spanish programme in which UK and Spanish Fashion students undertake collaborative projects in each others’ countries. Project aims included fostering and supporting second language use, providing an innovative context for collaborative art and design projects and offering an opportunity to simulate trans-national working conditions. Questionnaires, observation and interview data indicate that not all these objectives were realised, though student reaction to the technology and to the benefits it afforded for collaboration were broadly positive. The strengths and weaknesses of video-conferencing as a support to collaborative learning in this context are discussed.     

Reinstatement of fear to an extinguished conditioned context

Rats were shocked in the black but not the white compartment of a shuttlebox and then exposed to the black compartment in the absence of the shock unconditioned stimulus (US) to extinguish fear responses (passive avoidance). In five experiments, rats were then shocked in a reinstatement context (distinctively different from the shuttlebox) to determine the conditions that reinstate extinguished fear responding to the black compartment. Rats shocked immediately upon exposure to the reinstatement chamber failed to show either reinstatement of avoidance of the black compartment or fear responses (freezing) when tested in the reinstatement chamber. In contrast, rats shocked 30 sec after exposure to the reinstatement chamber exhibited both reinstatement of avoidance of the black compartment and freezing responses in the reinstatement chamber (Experiment 1). Rats shocked after 30 sec of exposure to the reinstatement chamber but then exposed to that chamber in the absence of shock failed to exhibit reinstatement of the avoidance response and did not freeze when tested in the reinstatement chamber (Experiment 2). Rats exposed to a signaled shock in the reinstatement chamber and then exposed to that chamber in the absence of shock also failed to exhibit reinstatement of the avoidance response (Experiment 5). These rats showed fear responses to the signal but not to the reinstatement chamber. Finally, rats exposed for some time (20 min) to the reinstatement chamber before shock exhibited reinstatement of the avoidance response but failed to freeze when tested in the reinstatement chamber (Experiments 3 and 4). These results are discussed in terms of the contextual conditioning (Bouton, 1994) and the US representation (Rescorla, 1979) accounts of postextinction reinstatement.     

Domestic pigeons (Columba livia) discriminate between photographs of male and female pigeons

We investigated whether pigeons are able to discriminate color photographs of male and female pigeons, using a categorical discrimination procedure. In Experiments 1 and 2B, 10 out of 14 pigeons learned the discrimination. Of these, 5 pigeons showed transfer to novel stimuli, demonstrating the categorical nature of the trained discrimination. Experiment 3 showed that the discriminative behavior was based primarily on the body, as opposed to the head and the neck region. In 1 out of 3 pigeons, the discriminative behavior was maintained by the black-and-white photographs. The results suggest that some pigeons have the ability to discriminate the sex of conspecifics without behavioral cues.     

Hydrogel discs for digital microfluidics

Hydrogels are networks of hydrophilic polymer chains that are swollen with water, and they are useful for a wide range of applications because they provide stable niches for immobilizing proteins and cells. We report here the marriage of hydrogels with digital microfluidic devices. Until recently, digital microfluidics, a fluid handling technique in which discrete droplets are manipulated electromechanically on the surface of an array of electrodes, has been used only for homogeneous systems involving liquid reagents. Here, we demonstrate for the first time that the cylindrical hydrogel discs can be incorporated into digital microfluidic systems and that these discs can be systematically addressed by droplets of reagents. Droplet movement is observed to be unimpeded by interaction with the gel discs, and gel discs remain stationary when droplets pass through them. Analyte transport into gel discs is observed to be identical to diffusion in cases in which droplets are incubated with gels passively, but transport is enhanced when droplets are continually actuated through the gels. The system is useful for generating integrated enzymatic microreactors and for three-dimensional cell culture. This paper demonstrates a new combination of techniques for lab-on-a-chip systems which we propose will be useful for a wide range of applications.     

‘World-travelling’: a framework for re-thinking teaching and learning in internationalised higher education

In an era of unprecedented student mobility, increasingly diverse student populations in many national contexts, and globally interconnected environmental and social concerns, there is an urgent need to find new ways of thinking about teaching and learning. Static assumptions about so-called ‘Western’ versus ‘non-Western’ teaching and learning approaches or ‘local’ versus ‘international’ students are inadequate for responding to the complex histories, geographies and identities that meet and mingle in our higher education (HE) institutions. In this paper, I use María Lugones’ ‘world-travelling’ as a framework for discussing international and New Zealand women students’ reflections on teaching, learning and transition in New Zealand HE. I conclude with some suggestions as to what effective pedagogy might look like in internationalised HE if we think beyond culturalist them-and-us assumptions and recognise students’ complexity.     

Children's Writing and the Use of Information and Communications Technology

This paper outlines issues around learning to write and considers the range of difficulties children may experience. The role of Information and Communications Technology in facilitating writing development is considered. Software applications that can be used to support aspects of the writing process and target teaching are outlined. Criteria for evaluation of existing products and the implications for practice in educational psychology are discussed.